./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ccc87605c4556c18c172bc882c4bc58637928d3f75ad69e0a339ead8d6093a78 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:52:19,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:52:19,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:52:19,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:52:19,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:52:19,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:52:19,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:52:19,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:52:19,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:52:19,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:52:19,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:52:19,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:52:19,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:52:19,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:52:19,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:52:19,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:52:19,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:52:19,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:52:19,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:52:19,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:52:19,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:52:19,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:52:19,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:52:19,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:52:19,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:52:19,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:52:19,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:52:19,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:52:19,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:52:19,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:52:19,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:52:19,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:52:19,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:52:19,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:52:19,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:52:19,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:52:19,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:52:19,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:52:19,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:52:19,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:52:19,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:52:19,920 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:52:19,946 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:52:19,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:52:19,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:52:19,948 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:52:19,948 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:52:19,948 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:52:19,949 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:52:19,949 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:52:19,949 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:52:19,949 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:52:19,950 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:52:19,950 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:52:19,950 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:52:19,950 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:52:19,951 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:52:19,951 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:52:19,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:52:19,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:52:19,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:52:19,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:52:19,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:52:19,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:52:19,953 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:52:19,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:52:19,953 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:52:19,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:52:19,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:52:19,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:52:19,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:52:19,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:52:19,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:52:19,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:52:19,956 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:52:19,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:52:19,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:52:19,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:52:19,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:52:19,957 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccc87605c4556c18c172bc882c4bc58637928d3f75ad69e0a339ead8d6093a78 [2021-11-12 23:52:20,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:52:20,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:52:20,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:52:20,228 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:52:20,228 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:52:20,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i [2021-11-12 23:52:20,308 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/data/f722f76c3/a24b4de6ec3747b9a3c3fdb2844946b8/FLAG9a1d8b3fe [2021-11-12 23:52:21,120 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:52:21,122 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i [2021-11-12 23:52:21,175 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/data/f722f76c3/a24b4de6ec3747b9a3c3fdb2844946b8/FLAG9a1d8b3fe [2021-11-12 23:52:21,645 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/data/f722f76c3/a24b4de6ec3747b9a3c3fdb2844946b8 [2021-11-12 23:52:21,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:52:21,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:52:21,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:52:21,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:52:21,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:52:21,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:52:21" (1/1) ... [2021-11-12 23:52:21,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f0b65c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:21, skipping insertion in model container [2021-11-12 23:52:21,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:52:21" (1/1) ... [2021-11-12 23:52:21,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:52:21,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:52:22,070 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i[4494,4507] [2021-11-12 23:52:22,080 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i[4554,4567] [2021-11-12 23:52:22,108 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:52:22,116 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:52:23,119 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:23,119 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:23,120 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:23,121 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:23,129 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:23,161 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:23,162 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:23,164 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:23,164 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:23,183 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:23,184 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:23,185 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:23,185 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:23,532 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:52:23,533 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:52:23,534 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:52:23,536 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:52:23,537 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:52:23,538 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:52:23,538 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:52:23,539 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:52:23,540 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:52:23,540 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:52:23,715 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:52:23,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:52:23,869 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:52:23,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@65ffd920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:23, skipping insertion in model container [2021-11-12 23:52:23,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:52:23,870 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:52:23,872 INFO L158 Benchmark]: Toolchain (without parser) took 2221.87ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 52.2MB in the beginning and 78.3MB in the end (delta: -26.1MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2021-11-12 23:52:23,873 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 94.4MB. Free memory was 65.8MB in the beginning and 65.7MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:52:23,874 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2219.08ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 52.0MB in the beginning and 78.3MB in the end (delta: -26.3MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2021-11-12 23:52:23,876 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 94.4MB. Free memory was 65.8MB in the beginning and 65.7MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2219.08ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 52.0MB in the beginning and 78.3MB in the end (delta: -26.3MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7039]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ccc87605c4556c18c172bc882c4bc58637928d3f75ad69e0a339ead8d6093a78 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:52:26,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:52:26,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:52:26,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:52:26,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:52:26,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:52:26,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:52:26,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:52:26,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:52:26,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:52:26,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:52:26,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:52:26,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:52:26,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:52:26,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:52:26,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:52:26,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:52:26,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:52:26,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:52:26,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:52:26,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:52:26,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:52:26,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:52:26,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:52:26,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:52:26,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:52:26,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:52:26,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:52:26,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:52:26,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:52:26,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:52:26,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:52:26,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:52:26,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:52:26,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:52:26,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:52:26,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:52:26,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:52:26,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:52:26,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:52:26,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:52:26,205 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:52:26,254 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:52:26,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:52:26,255 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:52:26,256 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:52:26,256 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:52:26,256 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:52:26,256 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:52:26,257 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:52:26,257 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:52:26,257 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:52:26,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:52:26,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:52:26,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:52:26,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:52:26,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:52:26,263 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:52:26,264 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:52:26,264 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:52:26,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:52:26,264 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:52:26,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:52:26,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:52:26,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:52:26,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:52:26,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:52:26,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:52:26,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:52:26,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:52:26,267 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:52:26,267 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:52:26,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:52:26,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:52:26,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:52:26,268 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccc87605c4556c18c172bc882c4bc58637928d3f75ad69e0a339ead8d6093a78 [2021-11-12 23:52:26,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:52:26,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:52:26,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:52:26,697 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:52:26,698 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:52:26,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i [2021-11-12 23:52:26,783 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/data/a590895af/fe7e8fb87d9843f3beba4c83d3638ce1/FLAG8eb049150 [2021-11-12 23:52:27,793 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:52:27,795 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i [2021-11-12 23:52:27,836 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/data/a590895af/fe7e8fb87d9843f3beba4c83d3638ce1/FLAG8eb049150 [2021-11-12 23:52:28,249 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/data/a590895af/fe7e8fb87d9843f3beba4c83d3638ce1 [2021-11-12 23:52:28,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:52:28,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:52:28,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:52:28,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:52:28,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:52:28,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:52:28" (1/1) ... [2021-11-12 23:52:28,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4231ebd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:28, skipping insertion in model container [2021-11-12 23:52:28,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:52:28" (1/1) ... [2021-11-12 23:52:28,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:52:28,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:52:28,680 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i[4494,4507] [2021-11-12 23:52:28,685 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i[4554,4567] [2021-11-12 23:52:28,712 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:52:28,719 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:52:29,530 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:29,531 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:29,532 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:29,533 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:29,534 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:29,549 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:29,550 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:29,552 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:29,553 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:29,554 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:29,556 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:29,557 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:29,557 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:29,969 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:52:29,970 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:52:29,971 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:52:29,972 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:52:29,974 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:52:29,975 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:52:29,975 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:52:29,976 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:52:29,977 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:52:29,977 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:52:30,176 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:52:30,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:52:30,344 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:52:30,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:52:30,446 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i[4494,4507] [2021-11-12 23:52:30,449 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i[4554,4567] [2021-11-12 23:52:30,450 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:52:30,451 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:52:30,522 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,523 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,523 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,524 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,526 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,538 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,539 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,540 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,540 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,541 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,542 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,543 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,546 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,597 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:52:30,598 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:52:30,599 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:52:30,600 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:52:30,600 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:52:30,601 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:52:30,601 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:52:30,602 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:52:30,602 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:52:30,603 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:52:30,645 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:52:30,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:52:30,729 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:52:30,755 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i[4494,4507] [2021-11-12 23:52:30,756 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i[4554,4567] [2021-11-12 23:52:30,757 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:52:30,758 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:52:30,805 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,805 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,805 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,806 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,807 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,817 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,817 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,818 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,819 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,819 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,821 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,821 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,822 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:52:30,880 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:52:30,881 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:52:30,882 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:52:30,882 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:52:30,883 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:52:30,884 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:52:30,885 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:52:30,885 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:52:30,886 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:52:30,886 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:52:30,910 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:52:30,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:52:31,430 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:52:31,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:31 WrapperNode [2021-11-12 23:52:31,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:52:31,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:52:31,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:52:31,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:52:31,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:31" (1/1) ... [2021-11-12 23:52:31,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:31" (1/1) ... [2021-11-12 23:52:31,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:52:31,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:52:31,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:52:31,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:52:31,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:31" (1/1) ... [2021-11-12 23:52:31,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:31" (1/1) ... [2021-11-12 23:52:31,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:31" (1/1) ... [2021-11-12 23:52:31,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:31" (1/1) ... [2021-11-12 23:52:31,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:31" (1/1) ... [2021-11-12 23:52:31,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:31" (1/1) ... [2021-11-12 23:52:31,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:31" (1/1) ... [2021-11-12 23:52:31,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:52:31,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:52:31,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:52:31,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:52:31,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:31" (1/1) ... [2021-11-12 23:52:31,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:52:31,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:52:31,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:52:31,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:52:31,873 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_load_n [2021-11-12 23:52:31,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:52:31,874 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 23:52:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 23:52:31,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:52:31,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:52:31,875 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-12 23:52:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-12 23:52:31,875 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr [2021-11-12 23:52:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr [2021-11-12 23:52:31,875 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_init_ptr [2021-11-12 23:52:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_init_ptr [2021-11-12 23:52:31,875 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-12 23:52:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-12 23:52:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:52:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:52:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:52:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:52:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_priv_xlate_order [2021-11-12 23:52:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_priv_xlate_order [2021-11-12 23:52:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:52:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:52:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 23:52:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 23:52:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-12 23:52:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-12 23:52:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:52:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:52:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:52:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:52:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-12 23:52:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-12 23:52:31,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:52:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:52:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:52:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_check_atomic_ptr [2021-11-12 23:52:31,883 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_check_atomic_ptr [2021-11-12 23:52:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-12 23:52:31,884 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-12 23:52:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_is_valid [2021-11-12 23:52:31,884 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_is_valid [2021-11-12 23:52:44,581 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:52:44,581 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 23:52:44,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:52:44 BoogieIcfgContainer [2021-11-12 23:52:44,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:52:44,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:52:44,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:52:44,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:52:44,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:52:28" (1/3) ... [2021-11-12 23:52:44,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c7eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:52:44, skipping insertion in model container [2021-11-12 23:52:44,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:31" (2/3) ... [2021-11-12 23:52:44,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c7eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:52:44, skipping insertion in model container [2021-11-12 23:52:44,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:52:44" (3/3) ... [2021-11-12 23:52:44,592 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_ring_buffer_init_harness.i [2021-11-12 23:52:44,598 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:52:44,598 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-12 23:52:44,647 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:52:44,654 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:52:44,654 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-12 23:52:44,676 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 91 states have (on average 1.2307692307692308) internal successors, (112), 93 states have internal predecessors, (112), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-12 23:52:44,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-12 23:52:44,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:44,688 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:44,689 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:52:44,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:44,695 INFO L85 PathProgramCache]: Analyzing trace with hash 2019519192, now seen corresponding path program 1 times [2021-11-12 23:52:44,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:44,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720644816] [2021-11-12 23:52:44,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:44,772 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:44,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:44,778 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:44,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:52:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:48,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 1559 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:52:48,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:49,073 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-12 23:52:49,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:49,391 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-12 23:52:49,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:49,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720644816] [2021-11-12 23:52:49,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720644816] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:52:49,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:52:49,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-12 23:52:49,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865770924] [2021-11-12 23:52:49,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:49,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:52:49,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:49,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:52:49,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:52:49,430 INFO L87 Difference]: Start difference. First operand has 137 states, 91 states have (on average 1.2307692307692308) internal successors, (112), 93 states have internal predecessors, (112), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-12 23:52:49,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:49,469 INFO L93 Difference]: Finished difference Result 268 states and 351 transitions. [2021-11-12 23:52:49,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:52:49,472 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 83 [2021-11-12 23:52:49,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:49,483 INFO L225 Difference]: With dead ends: 268 [2021-11-12 23:52:49,483 INFO L226 Difference]: Without dead ends: 130 [2021-11-12 23:52:49,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:52:49,492 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:49,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:52:49,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-12 23:52:49,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-12 23:52:49,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 86 states have internal predecessors, (100), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-12 23:52:49,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 157 transitions. [2021-11-12 23:52:49,548 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 157 transitions. Word has length 83 [2021-11-12 23:52:49,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:49,550 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 157 transitions. [2021-11-12 23:52:49,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-12 23:52:49,551 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 157 transitions. [2021-11-12 23:52:49,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-12 23:52:49,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:49,556 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:49,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:49,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:49,770 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:52:49,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:49,771 INFO L85 PathProgramCache]: Analyzing trace with hash -384546217, now seen corresponding path program 1 times [2021-11-12 23:52:49,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:49,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258604540] [2021-11-12 23:52:49,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:49,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:49,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:49,781 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:49,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:52:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:53,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:52:53,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:53,711 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-12 23:52:53,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:54,089 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-12 23:52:54,089 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:54,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258604540] [2021-11-12 23:52:54,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258604540] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:54,090 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:54,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:52:54,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216872421] [2021-11-12 23:52:54,090 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:54,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:52:54,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:54,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:52:54,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:52:54,094 INFO L87 Difference]: Start difference. First operand 130 states and 157 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 23:52:54,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:54,202 INFO L93 Difference]: Finished difference Result 252 states and 302 transitions. [2021-11-12 23:52:54,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:52:54,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 89 [2021-11-12 23:52:54,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:54,207 INFO L225 Difference]: With dead ends: 252 [2021-11-12 23:52:54,207 INFO L226 Difference]: Without dead ends: 132 [2021-11-12 23:52:54,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:52:54,211 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 6 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.81ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.26ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:54,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 464 Invalid, 12 Unknown, 0 Unchecked, 5.81ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 54.26ms Time] [2021-11-12 23:52:54,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-12 23:52:54,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-11-12 23:52:54,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 86 states have (on average 1.186046511627907) internal successors, (102), 88 states have internal predecessors, (102), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-12 23:52:54,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 159 transitions. [2021-11-12 23:52:54,229 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 159 transitions. Word has length 89 [2021-11-12 23:52:54,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:54,230 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 159 transitions. [2021-11-12 23:52:54,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 23:52:54,231 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 159 transitions. [2021-11-12 23:52:54,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-12 23:52:54,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:54,235 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:54,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:54,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:54,436 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:52:54,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:54,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1786153207, now seen corresponding path program 1 times [2021-11-12 23:52:54,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:54,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885083304] [2021-11-12 23:52:54,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:54,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:54,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:54,447 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:54,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:52:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:58,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 1586 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:52:58,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-12 23:52:58,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:58,975 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-12 23:52:58,975 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:58,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885083304] [2021-11-12 23:52:58,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885083304] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:52:58,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1760019850] [2021-11-12 23:52:58,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:58,976 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:52:58,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:52:58,989 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:52:58,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-12 23:53:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:00,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 1586 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:53:00,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-12 23:53:00,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:01,267 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-12 23:53:01,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1760019850] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:53:01,267 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:53:01,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [6, 6] total 14 [2021-11-12 23:53:01,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798156211] [2021-11-12 23:53:01,268 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:53:01,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:53:01,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:53:01,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:53:01,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:53:01,270 INFO L87 Difference]: Start difference. First operand 132 states and 159 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-12 23:53:01,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:53:01,376 INFO L93 Difference]: Finished difference Result 188 states and 228 transitions. [2021-11-12 23:53:01,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:53:01,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 91 [2021-11-12 23:53:01,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:53:01,380 INFO L225 Difference]: With dead ends: 188 [2021-11-12 23:53:01,380 INFO L226 Difference]: Without dead ends: 132 [2021-11-12 23:53:01,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:53:01,382 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 2 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.82ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.60ms IncrementalHoareTripleChecker+Time [2021-11-12 23:53:01,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 617 Invalid, 10 Unknown, 0 Unchecked, 4.82ms Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 40.60ms Time] [2021-11-12 23:53:01,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-12 23:53:01,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-11-12 23:53:01,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 86 states have (on average 1.1744186046511629) internal successors, (101), 88 states have internal predecessors, (101), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-12 23:53:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 158 transitions. [2021-11-12 23:53:01,404 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 158 transitions. Word has length 91 [2021-11-12 23:53:01,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:53:01,405 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 158 transitions. [2021-11-12 23:53:01,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-12 23:53:01,405 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 158 transitions. [2021-11-12 23:53:01,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-12 23:53:01,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:53:01,420 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:53:01,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-12 23:53:01,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:53:01,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:53:01,841 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:53:01,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:53:01,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1971788622, now seen corresponding path program 1 times [2021-11-12 23:53:01,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:53:01,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345100572] [2021-11-12 23:53:01,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:01,847 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:53:01,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:53:01,849 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:53:01,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:53:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:05,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 1630 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:53:05,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:05,972 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-12 23:53:05,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-12 23:53:06,532 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:53:06,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345100572] [2021-11-12 23:53:06,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345100572] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:53:06,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1708572420] [2021-11-12 23:53:06,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:06,533 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:53:06,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:53:06,538 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:53:06,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-12 23:53:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:07,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 1630 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:53:07,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:08,318 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-12 23:53:08,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:08,554 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-12 23:53:08,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1708572420] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:53:08,554 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:53:08,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [6, 6] total 14 [2021-11-12 23:53:08,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365938127] [2021-11-12 23:53:08,555 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:53:08,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:53:08,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:53:08,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:53:08,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:53:08,557 INFO L87 Difference]: Start difference. First operand 132 states and 158 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-11-12 23:53:08,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:53:08,692 INFO L93 Difference]: Finished difference Result 186 states and 231 transitions. [2021-11-12 23:53:08,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:53:08,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 99 [2021-11-12 23:53:08,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:53:08,698 INFO L225 Difference]: With dead ends: 186 [2021-11-12 23:53:08,698 INFO L226 Difference]: Without dead ends: 128 [2021-11-12 23:53:08,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:53:08,700 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 23 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.77ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.70ms IncrementalHoareTripleChecker+Time [2021-11-12 23:53:08,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 700 Invalid, 24 Unknown, 0 Unchecked, 4.77ms Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 55.70ms Time] [2021-11-12 23:53:08,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-12 23:53:08,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-12 23:53:08,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 83 states have (on average 1.1566265060240963) internal successors, (96), 84 states have internal predecessors, (96), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-12 23:53:08,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 153 transitions. [2021-11-12 23:53:08,714 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 153 transitions. Word has length 99 [2021-11-12 23:53:08,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:53:08,715 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 153 transitions. [2021-11-12 23:53:08,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-11-12 23:53:08,716 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 153 transitions. [2021-11-12 23:53:08,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-12 23:53:08,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:53:08,718 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:53:08,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:53:08,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-12 23:53:09,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:53:09,128 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:53:09,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:53:09,129 INFO L85 PathProgramCache]: Analyzing trace with hash 966208249, now seen corresponding path program 1 times [2021-11-12 23:53:09,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:53:09,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282348838] [2021-11-12 23:53:09,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:09,132 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:53:09,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:53:09,133 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:53:09,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:53:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:12,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:53:12,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:13,359 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-12 23:53:13,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:13,956 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-12 23:53:13,957 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:53:13,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282348838] [2021-11-12 23:53:13,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282348838] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:53:13,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [934354695] [2021-11-12 23:53:13,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:13,958 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:53:13,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:53:13,966 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:53:13,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-12 23:53:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:15,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:53:15,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-12 23:53:15,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:16,003 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-12 23:53:16,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [934354695] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:53:16,003 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:53:16,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [6, 6] total 12 [2021-11-12 23:53:16,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482747661] [2021-11-12 23:53:16,003 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:53:16,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:53:16,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:53:16,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:53:16,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:53:16,005 INFO L87 Difference]: Start difference. First operand 128 states and 153 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-12 23:53:16,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:53:16,070 INFO L93 Difference]: Finished difference Result 186 states and 227 transitions. [2021-11-12 23:53:16,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:53:16,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 138 [2021-11-12 23:53:16,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:53:16,086 INFO L225 Difference]: With dead ends: 186 [2021-11-12 23:53:16,086 INFO L226 Difference]: Without dead ends: 132 [2021-11-12 23:53:16,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:53:16,091 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 3 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.52ms IncrementalHoareTripleChecker+Time [2021-11-12 23:53:16,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 440 Invalid, 12 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 28.52ms Time] [2021-11-12 23:53:16,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-12 23:53:16,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2021-11-12 23:53:16,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 85 states have (on average 1.1529411764705881) internal successors, (98), 86 states have internal predecessors, (98), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-12 23:53:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 155 transitions. [2021-11-12 23:53:16,119 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 155 transitions. Word has length 138 [2021-11-12 23:53:16,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:53:16,122 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 155 transitions. [2021-11-12 23:53:16,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-12 23:53:16,122 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 155 transitions. [2021-11-12 23:53:16,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-12 23:53:16,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:53:16,125 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:53:16,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:53:16,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:53:16,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:53:16,531 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:53:16,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:53:16,531 INFO L85 PathProgramCache]: Analyzing trace with hash 156861623, now seen corresponding path program 1 times [2021-11-12 23:53:16,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:53:16,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205593742] [2021-11-12 23:53:16,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:16,534 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:53:16,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:53:16,535 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:53:16,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:53:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:20,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:53:20,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-12 23:53:20,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:21,086 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-12 23:53:21,086 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:53:21,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205593742] [2021-11-12 23:53:21,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205593742] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:53:21,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1840288657] [2021-11-12 23:53:21,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:21,087 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:53:21,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:53:21,094 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:53:21,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-12 23:53:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:22,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:53:22,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:23,026 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-12 23:53:23,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:23,732 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-12 23:53:23,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1840288657] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:53:23,732 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:53:23,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6, 6] total 16 [2021-11-12 23:53:23,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310147215] [2021-11-12 23:53:23,733 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:53:23,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:53:23,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:53:23,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:53:23,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:53:23,735 INFO L87 Difference]: Start difference. First operand 130 states and 155 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 6 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2021-11-12 23:53:24,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:53:24,208 INFO L93 Difference]: Finished difference Result 189 states and 228 transitions. [2021-11-12 23:53:24,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:53:24,216 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 6 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) Word has length 138 [2021-11-12 23:53:24,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:53:24,218 INFO L225 Difference]: With dead ends: 189 [2021-11-12 23:53:24,218 INFO L226 Difference]: Without dead ends: 128 [2021-11-12 23:53:24,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:53:24,219 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 41 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 279.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.37ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 341.33ms IncrementalHoareTripleChecker+Time [2021-11-12 23:53:24,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 859 Invalid, 114 Unknown, 0 Unchecked, 6.37ms Time], IncrementalHoareTripleChecker [18 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 341.33ms Time] [2021-11-12 23:53:24,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-12 23:53:24,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-12 23:53:24,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 83 states have (on average 1.144578313253012) internal successors, (95), 84 states have internal predecessors, (95), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-12 23:53:24,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 152 transitions. [2021-11-12 23:53:24,237 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 152 transitions. Word has length 138 [2021-11-12 23:53:24,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:53:24,238 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 152 transitions. [2021-11-12 23:53:24,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 6 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2021-11-12 23:53:24,239 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 152 transitions. [2021-11-12 23:53:24,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-12 23:53:24,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:53:24,241 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:53:24,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:53:24,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:53:24,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:53:24,650 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:53:24,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:53:24,650 INFO L85 PathProgramCache]: Analyzing trace with hash 569570142, now seen corresponding path program 1 times [2021-11-12 23:53:24,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:53:24,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849755056] [2021-11-12 23:53:24,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:24,654 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:53:24,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:53:24,656 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:53:24,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:53:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:28,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:53:28,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:28,671 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-12 23:53:28,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-12 23:53:29,145 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:53:29,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849755056] [2021-11-12 23:53:29,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849755056] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:53:29,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2088319317] [2021-11-12 23:53:29,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:29,145 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:53:29,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:53:29,146 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:53:29,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-12 23:53:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:30,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:53:30,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-12 23:53:30,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-12 23:53:31,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2088319317] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:53:31,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:53:31,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6, 5] total 15 [2021-11-12 23:53:31,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748277818] [2021-11-12 23:53:31,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:53:31,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:53:31,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:53:31,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:53:31,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:53:31,480 INFO L87 Difference]: Start difference. First operand 128 states and 152 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-12 23:53:31,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:53:31,572 INFO L93 Difference]: Finished difference Result 184 states and 224 transitions. [2021-11-12 23:53:31,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:53:31,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) Word has length 140 [2021-11-12 23:53:31,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:53:31,575 INFO L225 Difference]: With dead ends: 184 [2021-11-12 23:53:31,575 INFO L226 Difference]: Without dead ends: 128 [2021-11-12 23:53:31,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:53:31,577 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 5 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.72ms IncrementalHoareTripleChecker+Time [2021-11-12 23:53:31,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 576 Invalid, 16 Unknown, 0 Unchecked, 1.92ms Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 29.72ms Time] [2021-11-12 23:53:31,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-12 23:53:31,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-12 23:53:31,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 83 states have (on average 1.1325301204819278) internal successors, (94), 84 states have internal predecessors, (94), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-12 23:53:31,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2021-11-12 23:53:31,588 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 140 [2021-11-12 23:53:31,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:53:31,589 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2021-11-12 23:53:31,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-12 23:53:31,590 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2021-11-12 23:53:31,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-12 23:53:31,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:53:31,592 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:53:31,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:53:31,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-12 23:53:32,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:53:32,002 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:53:32,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:53:32,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1870885008, now seen corresponding path program 1 times [2021-11-12 23:53:32,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:53:32,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516771690] [2021-11-12 23:53:32,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:32,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:53:32,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:53:32,009 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:53:32,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:53:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:35,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:53:35,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-12 23:53:35,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:36,495 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-12 23:53:36,496 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:53:36,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516771690] [2021-11-12 23:53:36,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516771690] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:53:36,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [747316814] [2021-11-12 23:53:36,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:36,497 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:53:36,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:53:36,503 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:53:36,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-12 23:53:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:37,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:53:37,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:38,240 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-12 23:53:38,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:39,139 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-12 23:53:39,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [747316814] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:53:39,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:53:39,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6, 6] total 17 [2021-11-12 23:53:39,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560144924] [2021-11-12 23:53:39,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:53:39,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:53:39,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:53:39,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:53:39,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-12 23:53:39,141 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-12 23:53:39,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:53:39,376 INFO L93 Difference]: Finished difference Result 184 states and 222 transitions. [2021-11-12 23:53:39,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:53:39,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) Word has length 142 [2021-11-12 23:53:39,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:53:39,381 INFO L225 Difference]: With dead ends: 184 [2021-11-12 23:53:39,382 INFO L226 Difference]: Without dead ends: 128 [2021-11-12 23:53:39,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:53:39,384 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 14 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.65ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.69ms IncrementalHoareTripleChecker+Time [2021-11-12 23:53:39,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 698 Invalid, 30 Unknown, 0 Unchecked, 2.65ms Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 64.69ms Time] [2021-11-12 23:53:39,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-12 23:53:39,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-12 23:53:39,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 83 states have (on average 1.1204819277108433) internal successors, (93), 84 states have internal predecessors, (93), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-12 23:53:39,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2021-11-12 23:53:39,403 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 142 [2021-11-12 23:53:39,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:53:39,406 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2021-11-12 23:53:39,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-12 23:53:39,407 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2021-11-12 23:53:39,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-12 23:53:39,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:53:39,409 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:53:39,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:53:39,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-12 23:53:39,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:53:39,815 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:53:39,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:53:39,815 INFO L85 PathProgramCache]: Analyzing trace with hash -101994346, now seen corresponding path program 1 times [2021-11-12 23:53:39,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:53:39,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191683718] [2021-11-12 23:53:39,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:39,818 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:53:39,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:53:39,820 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:53:39,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:53:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:43,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:53:43,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-12 23:53:43,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-11-12 23:53:44,420 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:53:44,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191683718] [2021-11-12 23:53:44,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191683718] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:53:44,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1390429608] [2021-11-12 23:53:44,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:44,421 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:53:44,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:53:44,422 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:53:44,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-12 23:53:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:45,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:53:45,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:46,158 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-12 23:53:46,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:47,006 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-12 23:53:47,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1390429608] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:53:47,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:53:47,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6, 6] total 17 [2021-11-12 23:53:47,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868301751] [2021-11-12 23:53:47,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:53:47,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:53:47,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:53:47,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:53:47,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-12 23:53:47,009 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-12 23:53:47,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:53:47,213 INFO L93 Difference]: Finished difference Result 184 states and 220 transitions. [2021-11-12 23:53:47,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:53:47,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) Word has length 144 [2021-11-12 23:53:47,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:53:47,218 INFO L225 Difference]: With dead ends: 184 [2021-11-12 23:53:47,219 INFO L226 Difference]: Without dead ends: 128 [2021-11-12 23:53:47,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:53:47,220 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 12 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.17ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.11ms IncrementalHoareTripleChecker+Time [2021-11-12 23:53:47,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 695 Invalid, 29 Unknown, 0 Unchecked, 2.17ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 79.11ms Time] [2021-11-12 23:53:47,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-12 23:53:47,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-12 23:53:47,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 83 states have (on average 1.108433734939759) internal successors, (92), 84 states have internal predecessors, (92), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-12 23:53:47,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2021-11-12 23:53:47,228 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 144 [2021-11-12 23:53:47,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:53:47,229 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2021-11-12 23:53:47,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-12 23:53:47,230 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2021-11-12 23:53:47,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-12 23:53:47,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:53:47,232 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:53:47,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:53:47,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:53:47,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:53:47,640 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:53:47,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:53:47,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1141154128, now seen corresponding path program 1 times [2021-11-12 23:53:47,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:53:47,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875073429] [2021-11-12 23:53:47,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:47,644 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:53:47,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:53:47,645 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:53:47,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 23:53:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:51,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:53:51,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-12 23:53:51,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-12 23:53:52,040 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:53:52,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875073429] [2021-11-12 23:53:52,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875073429] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:53:52,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [295804449] [2021-11-12 23:53:52,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:52,040 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:53:52,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:53:52,041 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:53:52,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-12 23:53:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:53,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:53:53,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-12 23:53:53,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:54,490 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-12 23:53:54,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [295804449] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:53:54,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:53:54,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6, 6] total 17 [2021-11-12 23:53:54,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790728742] [2021-11-12 23:53:54,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:53:54,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:53:54,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:53:54,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:53:54,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-12 23:53:54,493 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-12 23:53:54,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:53:54,676 INFO L93 Difference]: Finished difference Result 184 states and 218 transitions. [2021-11-12 23:53:54,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:53:54,688 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) Word has length 146 [2021-11-12 23:53:54,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:53:54,690 INFO L225 Difference]: With dead ends: 184 [2021-11-12 23:53:54,690 INFO L226 Difference]: Without dead ends: 128 [2021-11-12 23:53:54,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:53:54,691 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 10 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.88ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.92ms IncrementalHoareTripleChecker+Time [2021-11-12 23:53:54,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 692 Invalid, 28 Unknown, 0 Unchecked, 1.88ms Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 63.92ms Time] [2021-11-12 23:53:54,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-12 23:53:54,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-12 23:53:54,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 83 states have (on average 1.0963855421686748) internal successors, (91), 84 states have internal predecessors, (91), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-12 23:53:54,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2021-11-12 23:53:54,701 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 146 [2021-11-12 23:53:54,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:53:54,701 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2021-11-12 23:53:54,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-12 23:53:54,702 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2021-11-12 23:53:54,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-12 23:53:54,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:53:54,704 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:53:54,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-12 23:53:54,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-12 23:53:55,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:53:55,114 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:53:55,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:53:55,115 INFO L85 PathProgramCache]: Analyzing trace with hash 845406158, now seen corresponding path program 1 times [2021-11-12 23:53:55,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:53:55,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530432806] [2021-11-12 23:53:55,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:55,118 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:53:55,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:53:55,119 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:53:55,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 23:53:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:58,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:53:58,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:59,107 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-12 23:53:59,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-12 23:53:59,637 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:53:59,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530432806] [2021-11-12 23:53:59,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530432806] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:53:59,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [58400577] [2021-11-12 23:53:59,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:59,638 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:53:59,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:53:59,640 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:53:59,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-12 23:54:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:00,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:54:00,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-12 23:54:01,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:01,802 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-12 23:54:01,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [58400577] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:54:01,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311128421] [2021-11-12 23:54:01,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:01,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:54:01,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:54:01,812 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:54:01,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-12 23:54:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:02,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:54:02,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:03,518 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-12 23:54:03,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:03,963 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-12 23:54:03,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311128421] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:03,964 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-12 23:54:03,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [6, 6, 7, 7] total 19 [2021-11-12 23:54:03,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431266370] [2021-11-12 23:54:03,965 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:03,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:54:03,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:03,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:54:03,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:54:03,967 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-12 23:54:04,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:04,046 INFO L93 Difference]: Finished difference Result 203 states and 234 transitions. [2021-11-12 23:54:04,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:54:04,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 148 [2021-11-12 23:54:04,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:04,050 INFO L225 Difference]: With dead ends: 203 [2021-11-12 23:54:04,050 INFO L226 Difference]: Without dead ends: 136 [2021-11-12 23:54:04,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 865 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:54:04,052 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 4 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.06ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.74ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:04,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 705 Invalid, 22 Unknown, 0 Unchecked, 2.06ms Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 68.74ms Time] [2021-11-12 23:54:04,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-12 23:54:04,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2021-11-12 23:54:04,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 87 states have (on average 1.0919540229885059) internal successors, (95), 88 states have internal predecessors, (95), 29 states have call successors, (29), 15 states have call predecessors, (29), 16 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) [2021-11-12 23:54:04,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2021-11-12 23:54:04,068 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 148 [2021-11-12 23:54:04,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:04,068 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2021-11-12 23:54:04,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-12 23:54:04,069 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2021-11-12 23:54:04,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-12 23:54:04,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:04,071 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:04,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:04,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:04,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-11-12 23:54:04,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:54:04,687 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:54:04,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:04,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1178061920, now seen corresponding path program 1 times [2021-11-12 23:54:04,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:04,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829929475] [2021-11-12 23:54:04,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:04,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:04,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:04,693 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:04,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-12 23:54:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:08,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 1753 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:54:08,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-12 23:54:08,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:09,417 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-12 23:54:09,417 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:09,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829929475] [2021-11-12 23:54:09,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829929475] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:54:09,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [589308226] [2021-11-12 23:54:09,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:09,418 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:54:09,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:54:09,422 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:54:09,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-12 23:54:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:10,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 1753 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:54:10,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-12 23:54:11,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-12 23:54:11,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [589308226] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:54:11,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754565803] [2021-11-12 23:54:11,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:11,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:54:11,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:54:11,665 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:54:11,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-12 23:54:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:12,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 1753 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:54:12,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-12 23:54:13,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:13,493 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-12 23:54:13,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754565803] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:54:13,494 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:54:13,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 7, 7, 7] total 15 [2021-11-12 23:54:13,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471085746] [2021-11-12 23:54:13,494 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:54:13,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-12 23:54:13,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:13,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-12 23:54:13,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:54:13,496 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand has 15 states, 15 states have (on average 10.333333333333334) internal successors, (155), 14 states have internal predecessors, (155), 3 states have call successors, (44), 2 states have call predecessors, (44), 5 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-12 23:54:14,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:14,129 INFO L93 Difference]: Finished difference Result 275 states and 322 transitions. [2021-11-12 23:54:14,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:54:14,135 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.333333333333334) internal successors, (155), 14 states have internal predecessors, (155), 3 states have call successors, (44), 2 states have call predecessors, (44), 5 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) Word has length 154 [2021-11-12 23:54:14,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:14,136 INFO L225 Difference]: With dead ends: 275 [2021-11-12 23:54:14,136 INFO L226 Difference]: Without dead ends: 154 [2021-11-12 23:54:14,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 923 GetRequests, 906 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:54:14,138 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 20 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 300.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.78ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 336.62ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:14,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1519 Invalid, 124 Unknown, 0 Unchecked, 3.78ms Time], IncrementalHoareTripleChecker [10 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 336.62ms Time] [2021-11-12 23:54:14,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-12 23:54:14,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 150. [2021-11-12 23:54:14,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 102 states have (on average 1.0980392156862746) internal successors, (112), 103 states have internal predecessors, (112), 30 states have call successors, (30), 15 states have call predecessors, (30), 17 states have return successors, (33), 31 states have call predecessors, (33), 29 states have call successors, (33) [2021-11-12 23:54:14,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 175 transitions. [2021-11-12 23:54:14,148 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 175 transitions. Word has length 154 [2021-11-12 23:54:14,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:14,149 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 175 transitions. [2021-11-12 23:54:14,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.333333333333334) internal successors, (155), 14 states have internal predecessors, (155), 3 states have call successors, (44), 2 states have call predecessors, (44), 5 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-12 23:54:14,149 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 175 transitions. [2021-11-12 23:54:14,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-12 23:54:14,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:14,152 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:14,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-11-12 23:54:14,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:14,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2021-11-12 23:54:14,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:54:14,767 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:54:14,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:14,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1799391010, now seen corresponding path program 1 times [2021-11-12 23:54:14,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:14,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896652212] [2021-11-12 23:54:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:14,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:14,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:14,771 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:14,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-12 23:54:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:18,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:54:18,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:18,847 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 21 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-12 23:54:18,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:19,775 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-12 23:54:19,775 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:19,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896652212] [2021-11-12 23:54:19,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896652212] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:54:19,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1510334047] [2021-11-12 23:54:19,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:19,776 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:54:19,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:54:19,777 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:54:19,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-12 23:54:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:23,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:54:23,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:23,882 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 21 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-12 23:54:23,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:24,368 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-12 23:54:24,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1510334047] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:54:24,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232342152] [2021-11-12 23:54:24,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:24,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:54:24,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:54:24,375 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:54:24,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-12 23:54:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:25,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:54:25,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-12 23:54:26,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-12 23:54:26,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232342152] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:26,974 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-12 23:54:26,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [10, 10, 10, 10] total 25 [2021-11-12 23:54:26,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206209982] [2021-11-12 23:54:26,975 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:26,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:54:26,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:26,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:54:26,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:54:26,976 INFO L87 Difference]: Start difference. First operand 150 states and 175 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-12 23:54:27,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:27,149 INFO L93 Difference]: Finished difference Result 230 states and 270 transitions. [2021-11-12 23:54:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:54:27,153 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) Word has length 158 [2021-11-12 23:54:27,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:27,155 INFO L225 Difference]: With dead ends: 230 [2021-11-12 23:54:27,155 INFO L226 Difference]: Without dead ends: 139 [2021-11-12 23:54:27,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 919 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:54:27,156 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 2 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.34ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 101.50ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:27,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1120 Invalid, 45 Unknown, 0 Unchecked, 2.34ms Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 101.50ms Time] [2021-11-12 23:54:27,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-12 23:54:27,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-11-12 23:54:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 94 states have (on average 1.0851063829787233) internal successors, (102), 95 states have internal predecessors, (102), 29 states have call successors, (29), 14 states have call predecessors, (29), 15 states have return successors, (31), 29 states have call predecessors, (31), 28 states have call successors, (31) [2021-11-12 23:54:27,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 162 transitions. [2021-11-12 23:54:27,166 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 162 transitions. Word has length 158 [2021-11-12 23:54:27,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:27,166 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 162 transitions. [2021-11-12 23:54:27,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-12 23:54:27,167 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 162 transitions. [2021-11-12 23:54:27,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-12 23:54:27,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:27,169 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:27,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:27,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:27,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:27,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:54:27,782 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:54:27,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:27,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1437660373, now seen corresponding path program 1 times [2021-11-12 23:54:27,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:27,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003423679] [2021-11-12 23:54:27,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:27,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:27,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:27,788 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:27,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-12 23:54:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:31,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:54:31,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:31,980 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 51 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-12 23:54:31,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-12 23:54:33,018 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:33,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003423679] [2021-11-12 23:54:33,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003423679] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:54:33,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [954582526] [2021-11-12 23:54:33,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:33,018 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:54:33,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:54:33,023 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:54:33,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-11-12 23:54:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:36,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:54:36,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 51 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-12 23:54:36,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-12 23:54:37,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [954582526] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:54:37,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422285832] [2021-11-12 23:54:37,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:37,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:54:37,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:54:37,416 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:54:37,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-12 23:54:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:38,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 23:54:38,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:39,251 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 51 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-12 23:54:39,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:40,425 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-12 23:54:40,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422285832] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:54:40,426 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:54:40,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 26 [2021-11-12 23:54:40,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034649561] [2021-11-12 23:54:40,427 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:54:40,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-12 23:54:40,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:40,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-12 23:54:40,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:54:40,430 INFO L87 Difference]: Start difference. First operand 139 states and 162 transitions. Second operand has 26 states, 26 states have (on average 5.8076923076923075) internal successors, (151), 26 states have internal predecessors, (151), 2 states have call successors, (41), 2 states have call predecessors, (41), 5 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-12 23:54:42,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:42,444 INFO L93 Difference]: Finished difference Result 270 states and 318 transitions. [2021-11-12 23:54:42,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-12 23:54:42,446 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.8076923076923075) internal successors, (151), 26 states have internal predecessors, (151), 2 states have call successors, (41), 2 states have call predecessors, (41), 5 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 163 [2021-11-12 23:54:42,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:42,448 INFO L225 Difference]: With dead ends: 270 [2021-11-12 23:54:42,448 INFO L226 Difference]: Without dead ends: 147 [2021-11-12 23:54:42,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 948 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2021-11-12 23:54:42,450 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 69 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 384.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.11ms SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 430.96ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:42,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1209 Invalid, 183 Unknown, 0 Unchecked, 3.11ms Time], IncrementalHoareTripleChecker [71 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 430.96ms Time] [2021-11-12 23:54:42,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-12 23:54:42,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-11-12 23:54:42,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 102 states have (on average 1.0784313725490196) internal successors, (110), 103 states have internal predecessors, (110), 29 states have call successors, (29), 14 states have call predecessors, (29), 15 states have return successors, (31), 29 states have call predecessors, (31), 28 states have call successors, (31) [2021-11-12 23:54:42,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 170 transitions. [2021-11-12 23:54:42,460 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 170 transitions. Word has length 163 [2021-11-12 23:54:42,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:42,460 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 170 transitions. [2021-11-12 23:54:42,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.8076923076923075) internal successors, (151), 26 states have internal predecessors, (151), 2 states have call successors, (41), 2 states have call predecessors, (41), 5 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-12 23:54:42,461 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 170 transitions. [2021-11-12 23:54:42,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-12 23:54:42,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:42,463 INFO L514 BasicCegarLoop]: trace histogram [14, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:42,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:42,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:42,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-11-12 23:54:43,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:54:43,076 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:54:43,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:43,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1008983893, now seen corresponding path program 2 times [2021-11-12 23:54:43,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:43,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637094402] [2021-11-12 23:54:43,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:54:43,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:43,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:43,085 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:43,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c121351e-2105-4fb2-88a0-b9c8cc3f3e38/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process